Changing the BIOS Boot Order
Configuring the boot order to boot to a disc like a CD or DVD is the most common reason for making boot order changes.
To change the order of the boot up devices in your PC's BIOS you will need to enter this motherboard component and make a few adjustments.
So the first thing to do is turn on your PC, or restart it if it is already on.
Watch for an "entering setup" message in the first few seconds after turning on your computer.
This message varies greatly from computer to computer and also includes the key or keys you need to press to enter the BIOS.
Note: The F2 key is common for Intel motherboards and the Del button is common for most other motherboards.
Quickly press the keys or button instructed by the message to get into BIOS setup program.
You may need to press the BIOS access key several times to enter BIOS. Don't hold the key down or press it too many times or your system may error or lock up. If that happens, just restart and try again.
After pressing the correct keyboard command from the previous step, you will enter the BIOS Setup pages.
Read More - http://www.qbs-pchelp.co.uk/pchelparticles/biosbootorder.html

